Network security Jobs in Burlington, ON

Nucor Rebar Fabrication is North America's leading fabricator, installer and distributor of concrete reinforcing steel and related products. Nucor Rebar Fabrication provides local service from rebar fabrication shops across North America. Each location is equipped with state-of-the-art fabrication equipment, however, it is OUR TEAM that makes the difference; driving our success with their knowledge, experience and know-how to get your job done. At Nucor Rebar Fabrication we respect, believe and invest in our people, who in turn deliver the highest level in service to our customers.

Purpose:

The Network Infrastructure Analyst is responsible for the secure, reliable, and efficient operation of network and systems infrastructure across local and remote environments. This role combines hands-on network and security administration with server, storage, virtualization, Microsoft 365, cloud, backup, monitoring, documentation, and end-user support responsibilities. The successful candidate will act as a technical resource for the IT team, support projects and operational improvements, and participate in incident response and on-call support.

Key Responsibilities

Network Security and Palo Alto Firewall Administration

• Administer, maintain, troubleshoot, and optimize Palo Alto Networks firewalls, including security policies, NAT, VPN connectivity, content and URL filtering, threat prevention, logging, alerting, and rule-base hygiene.
• Monitor and respond to security events and automated alerts; investigate potential threats, determine appropriate remediation, document findings, and escalate when required.
• Support network security controls including intrusion detection and prevention, secure remote access, segmentation, network access control, and conditional access.
• Coordinate changes and projects with internal network and security teams while serving as the local hands-on technical resource.
• Maintain accurate firewall, network, security, and recovery documentation, including configurations, procedures, diagrams, troubleshooting records, and vendor information.

Network Administration and Availability

• Manage and support LAN, WAN, wireless, VPN, MPLS, VLAN, DNS, DHCP, TCP/IP, routing, switching, access points, communication links, and related network equipment.
• Monitor network and system performance, availability, and capacity; identify risks and opportunities to improve reliability, security, speed, scalability, and recoverability.
• Diagnose and resolve complex connectivity and performance issues affecting servers, workstations, production/process/OT endpoints, and remote sites.
• Respond promptly to outages and incidents to minimize downtime and maintain business continuity.

Infrastructure, Systems, and Cloud Administration

• Deploy, administer, and maintain physical and virtual servers in on-premises and remote environments using VMware ESXi and Microsoft Hyper-V.
• Administer enterprise storage, SAN infrastructure, system backups, recovery processes, security updates, and data availability controls.
• Support Active Directory, Microsoft Entra ID/Azure AD, identity synchronization, single sign-on, Conditional Access, Privileged Identity Management, entitlement management, user provisioning, Microsoft Intune, Microsoft 365/Exchange, SharePoint, Azure, Citrix Virtual Apps and Desktops, SQL, and utility servers.
• Support core and division technologies including network printing, camera systems, telephone and Teams Phone services, site backup systems, and custom division applications and sites.
• Assist with server and data migrations, including migration of appropriate server-based data to SharePoint.

Operational Support and Continuous Improvement

• Provide technical support through phone, email, chat, ticketing systems, onsite service, and remote support channels.
• Monitor systems-management alerts, determine the most effective resolution, and implement repairs, upgrades, and improvements that maintain system performance and availability.
• Evaluate operational needs; research and recommend products, services, protocols, and standards; plan and deliver assigned infrastructure and security projects.
• Diagnose technical problems, document reusable solutions, identify incident trends, and recommend preventive or corrective actions.
• Act as a technical resource to teammates and end users; provide clear technical guidance, training, and knowledge transfer.
• Provide backup support for other IT operations roles and mentor or train team members when required.
• Work independently, prioritize competing assignments, make sound judgments during incidents, and coordinate work with internal teams, vendors, and external support providers.

Minimum Qualifications And Education Requirements

• University degree or college diploma in Computer Science, Information Technology, or a related field, or an equivalent combination of education and relevant technical experience.
• Five or more years of direct experience in network, infrastructure, systems administration, or a closely related technical support role.
• Strong hands‑on experience administering and troubleshooting Palo Alto Networks firewalls in an enterprise environment.
• Solid knowledge of security principles and controls, including firewall policy management, VPNs, intrusion prevention/detection, network segmentation, logging, alert response, content filtering, secure access, and incident troubleshooting.
• Proficiency with TCP/IP, DNS, DHCP, LAN/WAN, VLANs, routing, switching, wireless networking, VPNs, and network troubleshooting.
• Experience configuring and managing virtual environments, servers, enterprise storage, backup, and recovery systems.
• Working knowledge of Microsoft infrastructure and cloud technologies, including Active Directory, Microsoft Entra ID/Azure AD, Microsoft 365/Exchange, SharePoint, Azure, and Intune.
• Excellent analytical, problem-solving, documentation, and troubleshooting skills.
• Strong written and verbal communication skills, with the ability to explain technical and non‑technical information to end users, teammates, stakeholders, and vendors.
• Ability to adapt to change, learn and implement new technologies, and manage multiple priorities with minimal direction.

Preferred Experience And Certifications

• Palo Alto Networks certification or equivalent demonstrable firewall administration expertise.
• Relevant certifications such as CCNA, CCNP, CompTIA Network+, CompTIA Security+, Microsoft, VMware, or equivalent.
• Experience with Cisco routers and switches, Cisco HyperFlex, network access control, Citrix, Fortinet or Teams Phone systems, SQL, camera systems, and OT or production network environments.
• Experience supporting multiple locations, product groups, or divisions and coordinating work with remote IT teams.

Special Demands

• Work overtime and/or weekends when required to support incidents, maintenance, projects, or business operations.
• Provide onsite hands‑on support and act as a liaison for remote IT teams at the division’s physical location.
• Follow all applicable safety requirements while working in office, data centre, production, and operational environments.

Salary Range: $90,000 - $110,000 CAD annually.

Use of AI in Our Hiring Process

Our recruitment team may use AI-assisted tools to help identify and review candidate applications based on job-related requirements and qualifications. All hiring decisions are made by humans.

Existing Vacancy

This job posting is for an existing vacancy

Nucor Rebar Fabrication is an Equal Opportunity Employer.

Nucor Rebar Fabrication is committed to providing accommodations for applicants with disabilities; please contact us if you require accommodation during the recruitment process.

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